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Finding the Fourth Proportional to 478,842.83, 660,808.21 and 263,990.58

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Solution

The fourth proportional to 478,842.83, 660,808.21 and 263,990.58 is: 364,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,842.83 : 660,808.21 = 263,990.58 : x
  2. Step 2: Convert to fraction form
    478,842.83/660,808.21 = 263,990.58/x
  3. Step 3: Cross multiply
    478,842.83x = 660,808.21 × 263,990.58
  4. Step 4: Simplify right side
    478,842.83x = 174,447,142,626.66
  5. Step 5: Solve for x
    x = 174,447,142,626.66/478,842.83
  6. Step 6: Final answer
    x = 364,309.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.